This is an incredibly sweet idea. "Open when you need to know how much I love you; open when you don't feel beautiful; open when you need a laugh; open when you miss me; open when you're mad at me; open when you need a date night, etc.
I love you clothes pins: Write a message with a FINE POINT sharpie so it doesn't smear. Write "I love you" on a paper. Cut it out, and hot glue it to the clothes pin end. Would be cute for a care package!
How to pick up a girl, Disney style. However, Snow White's Prince is just known as the Prince not Prince Charming. Prince Charming is Cinderella's Prince. If anyone ever tries this on me, they better get it right.